DocumentCode :
2569754
Title :
Formal methods for the validation of fault tolerance in autonomous spacecraft
Author :
Ayache, S. ; Conquet, E. ; Humbert, Ph ; Rodriguez, C. ; Sifakis, J. ; Gerlich, R.
Author_Institution :
Matra Marconi Space, Toulouse, France
fYear :
1996
fDate :
25-27 Jun 1996
Firstpage :
353
Lastpage :
357
Abstract :
One of the major challenges to be faced in the design of new-generation spacecrafts comes with the requirement to increase the capacity of autonomous operation, in particular in presence of abnormal events. Formal methods are becoming more accepted in the space industry as a possible way to manage induced systems complexity. The Data Management System Design Validation (DDV) study has accomplished an experimental junction between the spacecraft autonomy trends and emerging formal methodologies. A methodological framework applicable to the early life cycle phases of fault-tolerant systems engineering has been defined. It focuses on the verification of fault tolerance properties using model-based formalisms. The Specification and Design Language (SDL) was selected for this study as the best suited language with respect to the application. This work has resulted in an executable specification establishing the tolerated behaviours of spacecraft computers in presence of faults. Fault tolerance properties have been checked, in spite of limitations inherent to model-based formalisms, by using an appropriate verification process
Keywords :
aerospace computing; aerospace industry; fault tolerant computing; formal specification; program verification; reliability; special purpose computers; specification languages; Data Management System Design Validation; SDL; Specification and Design Language; abnormal events; autonomous spacecraft; executable specification; fault tolerance validation; fault-tolerant systems engineering; formal methodolog; formal methods; life cycle phases; model-based formalism; new-generation spacecraft design; space industry; systems complexity; Aerospace electronics; Aerospace engineering; Aerospace industry; Application software; Fault tolerance; Fault tolerant systems; Laboratories; Space missions; Space vehicles; Systems engineering and theory;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Fault Tolerant Computing, 1996., Proceedings of Annual Symposium on
Conference_Location :
Sendai
ISSN :
0731-3071
Print_ISBN :
0-8186-7262-5
Type :
conf
DOI :
10.1109/FTCS.1996.534620
Filename :
534620
Link To Document :
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